package cn.com.dhc.chesishan;
//输入文件
//Import required packages
import java.sql.*;
import java.io.*;
import java.util.*;

public class JDBCExample4 {
	// JDBC driver name and database URL
	static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
	static final String DB_URL = "jdbc:mysql://localhost/cssdemo";

	// Database credentials
	static final String USER = "root";
	static final String PASS = "root";

	public static void main(String[] args) {
		Connection conn = null;
		PreparedStatement pstmt = null;
		Statement stmt = null;
		ResultSet rs = null;
		try {
			// Register JDBC driver
			Class.forName("com.mysql.jdbc.Driver");

			// Open a connection
			System.out.println("Connecting to database...");
			conn = DriverManager.getConnection(DB_URL, USER, PASS);

			// Create a Statement object and build table
			stmt = conn.createStatement();
			createXMLTable(stmt);

			// Open a FileInputStream
			File f = new File("XML_Data.xml");
			long fileLength = f.length();
			FileInputStream fis = new FileInputStream(f);

			// Create PreparedStatement and stream data
			String SQL = "INSERT INTO XML_Data VALUES (?,?)";
			pstmt = conn.prepareStatement(SQL);
			pstmt.setInt(1, 100);
			pstmt.setAsciiStream(2, fis, (int) fileLength);
			pstmt.execute();

			// Close input stream
			fis.close();

			// Do a query to get the row
			SQL = "SELECT Data FROM XML_Data WHERE id=100";
			rs = stmt.executeQuery(SQL);
			// Get the first row
			if (rs.next()) {
				// Retrieve data from input stream
				InputStream xmlInputStream = rs.getAsciiStream(1);
				int c;
				ByteArrayOutputStream bos = new ByteArrayOutputStream();
				while ((c = xmlInputStream.read()) != -1)
					bos.write(c);
				// Print results
				System.out.println(bos.toString());
			}
			// Clean-up environment
			rs.close();
			stmt.close();
			pstmt.close();
			conn.close();
		} catch (SQLException se) {
			// Handle errors for JDBC
			se.printStackTrace();
		} catch (Exception e) {
			// Handle errors for Class.forName
			e.printStackTrace();
		} finally {
			// finally block used to close resources
			try {
				if (stmt != null)
					stmt.close();
			} catch (SQLException se2) {
			}// nothing we can do
			try {
				if (pstmt != null)
					pstmt.close();
			} catch (SQLException se2) {
			}// nothing we can do
			try {
				if (conn != null)
					conn.close();
			} catch (SQLException se) {
				se.printStackTrace();
			}// end finally try
		}// end try
		System.out.println("Goodbye!");
	}// end main

	public static void createXMLTable(Statement stmt) throws SQLException {
		System.out.println("Creating XML_Data table...");
		// Create SQL Statement
		String streamingDataSql = "CREATE TABLE XML_Data "
				+ "(id INTEGER, Data LONG)";
		// Drop table first if it exists.
		try {
			stmt.executeUpdate("DROP TABLE XML_Data");
		} catch (SQLException se) {
		}// do nothing
		// Build table.
		stmt.executeUpdate(streamingDataSql);
	}// end createXMLTable
}// end JDBCExample
